To be a profitable service provider in 2022, the majority of engineers and experts on the topic agree that fiber is the key. Plus, fiber is the most economical solution.Within a greenfield network-where there is no existing infrastructure, the most economical decision is at the premise (i.e. office, home, apartment, condo, or 5G cell tower).However, what makes the decision economical in an existing cable operation may not be rebuilding fiber to the premise. Instead, the better investment could be in the existing infrastructure or performing technology updates. These updates could be the difference between extending the network's profitability into the next decade, or only extending its life a few years.